Paper feeding and cutting means



Jan. 21, 1941. c, GELLMAN" PAPER FEEDING AND CUTTING MEANS 2 Sheets-Sheet l Israel C6eZ/ma/2/ L n2 il n vllll Original Filed March 8, 1937 IN VENTOR.

HZS ATTORNEY.

Patented Jan. 21, 1941 UNITED STATES PATENT OFFICE 2,229,286 PAPER FEEDING AND CUTTING DEANS Original application; March a, 1937, Serial No.

Divided and this application October 29, 1937, Serial No. 171,754

13: Claims.

This invention pertains to wrapping machines, and more particularly to paper feeding means for use with bread wrapping machines, and is a division of my pending United States application Serial No. 129,561, filed March 8, 1937.

It is an object of the present invention to provide a simple web feeding mechanism which includes brackets for supporting a roll of paper or webbing, rollers for feeding the webbing, a manual crank, and a unidirectional drive means between the crank and rollers.

Another object is the provision of a feeding mechanism for attachment to a wrapping machine having a reciprocable wrapping carriage,

- and a cutting device having sliding support partly on the feeding means and partly on the machine below the carriage, and cam means on the carriage for operating the cutting means once for each reciprocation of the carriage. It is another object to provide eccentric ad-' justable bearing means for the roller mechanism. It is a further object to provide a simple means for determining the length of the effective stroke of the crank, and hence of the length of webbing fed at each operation of the crank.

A further object is the combination with means for feeding paper webbing toward a wrapping device adapted to utilize the webbing in wrapping operation, of means for shearing the webbing automatically and actuated by said wrapping de vice once during each reciprocation thereof, the.

shearing means being mounted to cut the webbing transversely of its length and being further mounted to shift in the direction of movement of the webbing and the wrapping device into positions of adjustment sothat different lengths of webbing may be cut to accommodate articles of different size.

Other novel aspects and objects of the invention, both in construction and operation, will appear as the following description proceeds in view of the drawings, in which:

Fig. 1 is a side elevation of the web feeding structure;

Fig. 2 is a sectional side view similar to Fig. 1,

but including the cutting mechanism;

Fig. 3 is a fragmentary vertical section of the 'manual drive means viewed along lines 3-4 of Fi 1;

Fig. 4 is a fragmentary inside elevation of part of the manual drive means looking in the direction of lines 4-4 of Fig. 3;

Fig. 5 is a top plan fragment of the feed apron and cutting means looking down along lines 5-! ill of Fig. 2;

Fig. 6 is a side elevational detail of the cutter, as seen on line 6-6 of Fig. 5;

. Fig. 7 is a front vertical section through part of the cutter, as seen along lines of Fig. 6;

Fig. 8 is a side section detail of the cutting it means taken along lines 88 of Fig. 5; while Fig. 9 is a sectional detail through the cutter mounting means along lines 9-9 of Fig. 6.

As viewed in part in Fig. 2, a bread wrapping machine of a type for which the paper feed is 10 especially suited is shown to include a main frame 24 having a reciprocable bread elevator 26 which receives conveyed bread from a member 53 and is adapted to elevate a loaf against a piece of wrapping paper yieldably stretched across the path of the elevator by tautening means including a roller 9| mounted in bracket means] 93 so as ,to effect a partial wrapping of the loaf, further wrapping being accomplished by a reciprocable wrapping carriage 88 which 20 moves through agency of reciprocally driven links I42 in timed relation to the elevator to withdraw the loaf therefrom, and also efiect further partial wrapping, as set forth in detail in the aforesaid pending application. 35

As seen in Fig. 1, the paper feed mechanism includes a pair of spaced uprights in the form of somewhat triangularly shaped casting 200 mounted at an end of the frame 24.

A pair of paper rolls 2M are supported on 30 rollers 202, which are cradled in slots 203 cast in the upper corner portions of the frame 200. The paper webs 204 may both be fed over an idling roller 205 journaled between the brackets 20!] and thence between a master feeding roller 206, 35 and presser rollers 201 likewise journaled between the brackets 200 (Fig. 2). The presser rollers 201, however, are provided with an eccentric stud journal 208 pivotally supported on the brackets 200 and provided with a handle por- 40 tion 209 and a. set screw 2H1, by means of which the several rollers 201 may be pivoted toward and away from the master feed roller 206 and locked in a desired position.

The pressure rollers 20! are spaced apart suit- 46 ably and extend into a plurality of edgewise slots 2| I (Fig. 3) formed in a feeding apron 2l2 which is anchored at its rearward or left-hand extremity as seen in Fig. 2, to a cross member 2l3 and which extends arcuately downward beneath the 50 knife supporting bracket 2 to a point confronting the rearmost edge of the stationary cutting knife 2|! (Figs, 2, 6 and 8).

The master feed roller 20. is provided with a gear 2'! which meshes with a driving gear 2|! rotatable by a reciprocably operable crank 2| 8 journaled in one of the brackets 200, and having an offset arm 2!!) which is adapted to abut against a movement limiting pin 228 movable in an arcuate slot 22l provided in the frame 208.-

The pin 228 may comprise two threaded portions .so that it may be clamped or screwed into position in the arcuate slot and thus stop the movement of the crank 218 at any desired position.

In this way the distance which the master roller 206 is rotated determines the length of paper which will be fed from the rolls 28 l.

The fragmentary elevation shown in Fig. 4 illustrates the crank mechanism on the inner side of the main bracket 200 and includes a ratchet 222 on the crank spindle, and a pair'of springurged pawls 223 engageable with the ratchet and which permit the initial movement of the crank 2l8 in. an anti-clockwise direction, but which effect a driving engagement with the gear 2H when the crank is returned in a clockwise direction (Fig. l) for each feeding operation,

The knife supporting structure includes a yokeshaped frame 224 (Figs. 5 and 6) the left-hand free ends of which are pivotally mounted, as at 225, to a cross bearer bracket 226 which extends between the upright sides of the main supporting brackets 280, and which is engaged at its outermost extremities by a set screw 221 slidable in an elongated slot 228 in the support 200. A front bearer 229 is joined with therear bearer 226 by longitudinally extensive straps 238 (Fig. 6). The front bearer 229 is slidably supported at its ends on shelves 2 formed in frame 24 and engages the offset end portions 23! of theelongated rails 232 (Figs. 5 and 8) which are secured to the main longitudinal rails 89 inside of the main frame by means of set screws 233 extending through longitudinal slots 234 in the supporting rails 232. The upturned end portions 23 I of the supporting rails 232 fit into slots in the front cross bearer 229.

In order to adjust the position of the knife carrier, it is simply necessary to loosen the set screws 221 (Figs. 5 and 9) and the screws 233, whereupon the rear and front bearers 226 and 229, together with the supporting rails 232, may be moved forwardly or backwardly to any desired position.

The front cross bar of the knife frame 224, as seen in Figs. 5 to 8, is provided with a plurality of spaced, extending bosses 235, the outermost ones of which are provided with a slot in which are seated rollers 236 engageable by cam fingers 23! (as in Figs. 2 and 8) extended from the rear of the inner folding carriage 88 when the latter is moving through the backward portion of its travel.

The centrally or inwardly located extended bosses 235 are provided with set screws 238 which serve to urge tension springs 239 against the movable knife elements 248 against the laterally extensive cutting edge of the stationary knives 2I5, it being observed that the movable knives 248 are two in number (Fig. 7), being separated from one another at substantially the midpoint of the frame, and being pivotally attached to the latter by means of hinges 24l. It will be observed that the cutting edge of the knives is relieved inwardly from the outermost extremities of the blade toward the centers thereof, for the purpose of providing an advancing cut across the sheet as the knife frame descends.

At the outermost forward (right hand) corners of the frame 224, there are bosses 235" provided with a vertical spring well 242 in which are seated springs 243, seated on screw studs 244 extending through the stationary knives 2| 5. These springs serve to return the knife frame to its raised position after each cutting operation.

In Fig. 5 (and also Figs. 6 to 8), it will be observed that an intermediate paper support is provided between rail parts 23 l-232 for the sheet of wrapping paper, and this support takes the form of an extensible pan or apron which includes a bracket 268 having a lower offset edge part 26l (Fig. 8) which bends down below the bottom of the front bearer 229 .Of the knife frame,

and is secured to the latter by means such as' the screws 264. The upper part 26 I of this apron structure overlies a frame cross arm 265 and has adjacent its right-hand end, as seen in Fig. 8, an extensible part 262 (see also Fig. 7) slidably supported on opposite flange members 263 screwed or otherwise attached to the bottom of the main bracket part 260.

All of the paper feed chutes and aprons are preferably provided with longitudinally extensive ribs 2l2' (on the apron 2l2, Figs, 3 and 5). By this means friction resistance to the movement of the paper is reduced and at the same time the paper is stiffened for more efficient feeding and positioning.

In order to prevent slippage of the wrapping paper, which is frequently a waxed paper, between the master feed roller 286 and the presser rollers 201, the latter are driven with and by the master roller 286 by means of gear teeth 2H which mesh with teeth 2Hi provided on the presser roller shaft at the right-hand interior side of the paper roll frame 208, as seen in Fig, 2. In

this manner when the master roller 206 is turned by the crank 218 or other means, the presser rollers 28'! rotate therewith through the medium of the meshed gearing 2| 6-2|1, thus assuring a positive feeding movement of the paper web.

The operator has merely to rotate the crank 2l8 in an anti-clockwise direction, having previously set the pin 228 to determine the length of stroke or amount of paper to be fed, and then return the crank in the opposite or clockwise direction so as to rotate the gear 2H through the medium of the ratchet mechanism 222223 (Figs. 1 and 4). The result of this operation is to rotate the master rollers 286 and feed a portion of the paper web (two thicknesses being optionally used in the embodiment shown) downwardly into the apron 2l2, and thence beneath the knife carrying frame 2| 4 and above the point of issue of the elevator 28.

It may be observed that the advancing paper is slid onto the spaced rails 88. between which the elevator 28 rises (Figs. 2 and 5). The paper is tautened by means of presser bars 95 working in slots 89' on rails 89, and urged upwardly by spring means 96 which press the paper up against adjustable cross rollers 9| beneath the carriage 88( oller 9| being adjustable by reason of its slidable mounting bracket 93).

Meanwhile, it may be assumed that the machine has been set into wrapping operation by the master control lever 38, and that the inner carriage 88 moves backwardly before the fold-. ing operation and causes the cam fingers 231 thereon (Fig. 2) to ride onto the rollers 236 on the frame 224, thus pivoting the latter downwardly against the tension of the return springs 243 (Fig. 8). In this manner the movable knife member 240 will bear against the paper sheet and against the stationary knife member M5 and shear the paper, whereupon the carriage 88 havclaim as new and desire to protect by Letters Patent is:

1. In a wrapping machine, the combination, with a reciprocable wrapping member therein of adjustable means for feeding predetermined lengths of webbing in the direction of reciprocation of said wrapping member and into wrapping position relatve to the latter, web severing means extending transversely of said webbing near one of the terminal positions of said wrapping member, means mounting said severing means for reciprocable adjusting movement in the direction of movement of said webbing, and means on said wrapping member arranged for cooperation with said severing means to actuate the latter in web severing operation when the wrapping member moves into a certain position relative to said terminal position.

2. In a machine of the class described including spaced upright bracket means for supporting paper supply roller means, a cutting device including a pivoted frame carrying a knife element and bearer means therefor having partial hori zontally sliding support.on said bracket means and sliding support on means in said machine, whereby the cutting position of said knife eleinent may be adjusted horizontally.

3. In a machine of the type described including a frame, a reciprocable wrapping carriage and drive means therefor, paper feeding means including a pair of brackets mounted in oppositely spaced upright position at an end of said frame substantially opposite one of the terminal positions of said carriage, paper supply roller means journaled on said brackets for rotation about an axis transverse to the direction of reciprocation of said carriage, feed roller means journaled on said brackets collaterally with said supply roller means and operable to feed paper webbing therefrom toward said carriage for utilization by the latter, means for actuating said feed roller means, and web severing means coacting with said carriage and having horizontally sliding adjustable support on said brackets for movement toward and away from said carriage.

4. In a machine of the class described, paper feed mechanism including a pair of brackets mounted in opposite upright position on said machine, said brackets each having a horizontally extensive top arm joined toconvergently sloping arms which converge in a lower mounting head attached to said machine, each bracket having means near the juncture of the horizontal and sloping arms providing journals for paper supply rollers, feed roller means journaled on said brackets in the region of said lower mounting head for rotation collaterally of said supply roller means, and drive means mounted on said lower head portion for driving said feed roller means, each of said brackets having aligned horizontal slots in the lower mounting head portion thereof and providing support for a horizontal Having thus described my invention, what I paper web severing means cooperable with said machine.

5. In a web feeding and shearing mechanism, means for supportin a supply of webbing, mechanism for feeding said webbing in a substantially horizontal plane into a predetermined position, and shearing mechanism including shear supporting means mounted formovement horizontally back and forward in the direction of movement of said webbing toward said predetermined position, and a movable shead member carried by said supporting means and arranged for movement from a normally raised position above the plane of movement of said webbing into shearing engagement transversely across the latter, and means for moving said shear in shearing action.

6. In a device of the class described including a reciprocable member withrespect to which var ious lengths of webbing are to be fed, means for feeding webbing into operative relation with respect to said reciprocable member, shear supporting means mounted for movement toward and away from said reciprocable member in the direction of movement of said webbing, shear means mounted on said supporting means for movement toward and away from the plane of said webbing, means yieldably urging said shear means into a normal position away from the webbing, together with means coacting with said reciprocable member when the latter is moved into a certain position to move said shear means into 7 shearing engagement with said webbing.

'7. In a sheet feeding and shearing device including means for feeding sheeting into a certain position, shearing mechanism comprising a support mounted for movement back and forth in the direction of movement of said sheeting toward said position, means for securing said supshear means toward and away from said stationary shear means for cooperation with the latter to out different lengths of sheeting dependent upon the position of adjustment of said support with respect to said particular'position.

8. In a paper feeding and cutting mechanism, paper supporting means onto which paper is to be fed, means for feeding a paper webbing onto said supporting means, and adjustable web shearing means including a knife carrier and means mounting the same at one side opposite said paper supporting means for adjusting movement toward and away from the latter, means supportably associated with said paper supporting means for supporting said knife carrier at its side adjacent the paper supporting means, and knife means arranged on said carrier for actuation to sever said webbing after the same is fed onto said supporting means and in lengths depending upon the adjusted position of said carrier relative to said supporting means.

9. In a wrapping machine of the class described including a reciprocable wrapping member and adjustable means for feeding diflerent lengths of wrapping paper in a continuous web in the general direction of reciprocation of said wrapping member into a wrapping position relative to the latter, web severing means mounted near one of ping member and including severing elements extending transversely of the webbing, and means mounting said severing means for reciprocable adjusting movement in a direction toward and away from said terminal position in the direction of movement of said webbing and reciprocable wrapping member whereby different lengths of wrapping paper may be severed from said web dependent upon the position of adjustment of the severing means relative to said terminal position, said severing means being adapted to be actuated by means coacting with said reciprocable wrapping member.

10. In a web feeding and shearing mechanism, means for supporting a supply of webbing, mechanism for feeding said webbing in a substantially horizontal plane into a predetermined position, and shearing mechanism including shear supporting means mounted for movement horizontally back and forward in the direction of movement of said webbing toward said predetermined position, and a movable shear member carried by said supporting means and arranged for movement from a normally raised position above the plane of movement of said webbing into shearing engagement transversely across the latter, said movable shear member being adapted to coact with reciprocable wrapping means which moves back and forth relative to said predetermined position in the direction of movement of the webbing, to actuate said movable shear once during each reciprocation of said wrapping means.

11. In a sheet feeding and cutting mechanism for use in a wrapping machine having wrapping instrumentalities adjustable to accommodate articles of different size requiring diiferent lengths I .the terminal positions of said reciprocable wrapation, and means adjustably mounting said movable cutting member for movement back and forth toward and away from said predetermined position in the direction ofmovement of said webbing, whereby different lengths of the latter may be cut as aforesaid.

12. In a machine of the class described including a reciprocable carriage to perform an operation upon a sheet, sheet feeding and shearing means comprising, in combination, mechanism for feeding a web of sheet material into position beneath said carriage by movement in one of the directions of reciprocal movement of said carriage, and web shearing means including a cutting device arranged and constructed to coact with said carriage for movement by the latter into shearing engagement with the webbing once during each reciprocation of the carriage, and means adjustably mounting said cutting device for movement back and forth in the direction of movement of said carriage, whereby the length of web cut as aforesaid may be changed, said carriage coacting with said cutting device to actuate the latter in all positions of adjustment as aforesaid.

13. In a machine of the class described including a reciprocable wrapping device arranged for movement to effect wrapping operations upon cut lengths of sheet material, the combination of sheet feeding and cutting means comprising mechanism for feeding a web of sheet material in one of the directions of reciprocation of the wrapping device into positions for utilization with the latter, a cutter support mounted for adjusting movement in the directions of reciprocation of said wrapping device, a movable cutter mounted on said support for movement toward and away from the plane of said webbing transversely of the latter into and out of cutting engagement therewith, and means operatively associating said wrapping device and said movable cutter to effect movement of the latter into cutting 

